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Discontinued Operations - Assets and Liabilities Held For Sale (Detail) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Disposal Group Including Discontinued Operation Balance Sheet Disclosures [Abstract] |  |
Current assets held for sale | $ 0 | $ 3,113
Long-term assets held for sale | 650 | 2,005
Total assets held for sale | 650 | 5,118
Current liabilities held for sale | 0 | 536
Total Liabilities held for sale | 0 | 536
Net assets and liabilities held for sale | $ 650 | $ 4,582

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